Full Size Bed Dimensions vs Queen: Complete Metric and Imperial Comparison

10 min read | Updated October 9, 2026

A full bed and a double bed are the same mattress, 54 inches wide and 75 inches long. Canadian stores, Mattress Miracle included, call it a double; American brands call it a full. A queen is 60 by 80 inches in both countries. Those figures come from the Mattress Miracle mattress size chart and match our floor in Brantford. Every one of the 41 models in our double mattress collection is also made as a queen size mattress.

A queen mattress is a 60 by 80 inch bed sized for two adults. It gives each sleeper 30 inches of width, 3 more than a full, and its 80-inch length is 5 inches longer than a full or a twin. Its 4,800 square inches of surface make it 18.5% larger than a full at 4,050.

The Better Sleep Council, sponsored by the International Sleep Products Association, lists the full at 53 by 75 inches, so on its chart a queen is 7 inches wider. Mattress Miracle's size chart and bedding chart both use 54 inches.

Full vs Queen Bed Dimensions in Inches and Centimetres

Full vs queen bed dimensions differ by 6 inches of width and 5 inches of length. A full is 54 x 75 inches (137 x 191 cm) and a queen is 60 x 80 inches (152 x 203 cm). The metric figures are conversions. Canada's Weights and Measures Act defines the inch as 1/36 of a yard and the yard as 0.9144 metre, so one inch is exactly 2.54 cm.

Our full size bed dimensions in cm page covers the double alone in metric. Rounded centimetres hide a few millimetres. A full's exact length is 190.5 cm, so charts print it as either 190 or 191 cm. The true length difference is 12.7 cm, where the rounded figures suggest 12. For a built-in or a frame listed only in centimetres, measure the mattress itself.

Is a Full the Same as a Double Bed in Canada?

Yes. A full and a double are the same 54 by 75 inch mattress. Canadian retailers, Mattress Miracle among them, label it double; American brands and many cross-border websites label it full. Sheets sold as either fit the same bed. Queen means 60 by 80 inches on both sides of the border, so double versus full is the only naming trap. Our Canadian double bed size guide covers where the two names came from.

A full is the same 75-inch length as a twin and 15 inches wider. If you are choosing between a double and a single for a child's room, our twin mattress size guide for Canada runs that comparison one size down.

Full Queen vs Queen: What the Full/Queen Label Means

Full/queen (sometimes double/queen) is a bedding size. Comforters, quilts and some duvet covers are sold this way because one in-between cut can cover either a 54-inch double or a 60-inch queen. The Sleep Foundation's comforter size guide notes that when a maker sells the sizes separately, the queen comforter is typically slightly longer and wider. No mattress is sold as a full queen: it is either 54 x 75 or 60 x 80.

The Sleep Foundation puts full comforters at 78 to 88 inches wide by 86 to 92 long, and queen comforters at 86 to 90 wide by 90 to 100 long. Take a full/queen where those ranges overlap, 86 to 88 inches wide. It hangs 16 to 17 inches over each side of a double and 13 to 14 inches over a queen.

Mattress height decides whether that is enough. The same guide's rule is mattress width plus twice its height. A 12-inch queen needs 84 inches of comforter to reach the bottom edge on both sides, and a 15-inch queen needs 90. A full/queen suits a thin queen and runs short on a tall pillow-top.

At Mattress Miracle, the reversible Amara comforter is sold in one Full/Queen size for $50 in our queen comforter collection. Our duvets come in separate double and queen cuts. Check the inches on the tag before you pay. If the comforter-or-duvet question is still open, our guide to what a duvet is and how it differs from a comforter sorts out fill, covers and washing.

Full and Queen Sizes in Metric: cm and mm Chart

The full and queen sizes in metric are below, beside their neighbours, for a room plan or furniture listing in centimetres. The figures are conversions at 2.54 cm per inch, rounded. For every size from single to California king on one page, see our Canadian mattress size conversion chart.

Two lengths cover almost every North American bed: 191 cm (75 inches) for twin and full, and 203 cm (80 inches) for twin XL, full XL, queen and king. Width is what changes.

What Size Room Do You Need for a Full vs a Queen?

A full needs a room of at least 9 by 10 feet, and a queen at least 10 by 10 feet. Those are the room minimums on our size chart, which also asks for 2 feet of walking space around the bed. With that space on each side and at the foot, a full covers 8 feet 6 inches by 8 feet 3 inches of floor. A queen covers 9 feet by 8 feet 8 inches. Leave 3 feet at the foot if a dresser drawer or closet door opens there.

For furniture plans drawn around both sizes, our queen vs full bedroom layout guide places nightstands, dressers and doors.

Is a Full Bed Big Enough for Two People?

A full bed fits two adults, but tightly: 54 inches split two ways is 27 inches each. The Better Sleep Council compares that to a crib mattress, which it lists at 27 by 52 inches. A queen gives each person 30 inches and a king 38, while one person alone on a twin has 39. Our queen vs double bed comparison looks at the step up from a couple's side.

Pillows show the squeeze. Two standard pillows (20 by 26 inches) span 52 inches, nearly the whole width of a double. Two queen pillows (20 by 30) span exactly the 60 inches of a queen. A child or a dog who joins you at night takes the margin first. Once the size is settled, our guide to choosing a pillow in Canada covers loft and fill.

Full vs Queen Sheets, Duvets and Comforters

Full and queen bedding is not interchangeable. A double fitted sheet is cut for 54 x 75 inches and a queen fitted sheet for 60 x 80. A queen sheet bunches on a full mattress, and a double sheet pulls off a queen's corners overnight. The sizes below come from Mattress Miracle's Canadian bedding size chart; the centimetres are our conversions at 2.54 cm per inch, rounded to the nearest centimetre.

Pocket depth matters as much as the size name. Our Bamboo Luxe 7300 deep-pocket sheet set has a 14-inch pocket in double and a 17-inch pocket in queen, so match the sheet to your mattress height too. Compare queen bed sheets side by side, or browse sheets in every size, flat sheets included. Folded on a shelf the two sizes look alike, and our how to fold a fitted sheet guide makes the stack neat enough to label.

Duvets follow the same split. Our Cordoba 600-loft duck down duvet is $284 in double and $320 in queen (summer weight), and you can shop double duvets or queen duvets in every fill we carry. A cover should match the insert's size label; our step-by-step guide to putting on a duvet cover keeps the corners where they belong.

Will a Queen Mattress Fit on a Full Bed Frame?

No. A queen mattress on a full bed frame overhangs each side rail by 3 inches and the foot by 5, with nothing under the edges. The reverse, a full on a queen frame, leaves 6 inches of empty width for the mattress to slide into. Platform beds, storage beds and box springs are built to one size, so keep the frame and the mattress the same size.

Metal frames that claim to fit both sizes are usually simple rail systems; platform and storage beds come in one size. If you are keeping a headboard, footboard or storage bed, confirm its size before you replace the mattress. Mattress Miracle lists 69 bed frames in both double and queen, and on October 9, 2026 the queen version cost a median $30 more. Our foldable metal frame is $190 in double and $230 in queen. Browse double bed frames if the room says full, or queen bed frames if it has 10 feet each way.

An antique double that measures under 54 by 75 inches can take a mattress cut to order. Custom sizes take 2 to 3 weeks, are quoted individually and carry the full manufacturer warranty. They are not covered by the 60-Night Comfort Guarantee, because a cut mattress cannot be resold. Our custom size mattress page lists the brands we cut and takes your measurements for a quote.

Is a Queen Worth It Over a Full? The Price Difference

For most couples a queen is worth it over a full, because the price gap is smaller than the size jump. On October 9, 2026 we compared the double and queen prices of all 41 mattresses in the Mattress Miracle double collection, every one of which is also sold in queen. The queen cost $20 to $512 more, with a median gap of $54, or 8.6%, for 18.5% more surface. On 27 of the 41 models the step up was under $100. Our Natura and Sprout natural mattresses sit outside that collection, and their queen costs $77 to $2,000 more.

The gap widens in the premium Restonic Revive mattresses. To line these models up against twin and king prices too, open our complete mattress collection, where every size sits on one product page. Bedding adds a smaller step, about $36 on the Cordoba duvet above. A full earns its place when the room or the number of sleepers calls for it; as a way to save $54 on a couple's bed, it rarely pays off.

Full or Queen: Which Size Should You Choose?

Choosing between a full and a queen comes down to who sleeps in the bed, how tall they are and the room. Once the size is set, our two-minute mattress quiz narrows the models.

Choose a full (double) if:

• You sleep alone and want more room than a twin without a queen's floor space.
• The bedroom is about 9 by 10 feet.
• It is a guest room used a few nights a month, mostly by one guest.
• A teen is moving up from a twin and is under about 5 feet 10 inches, the height at which our size chart starts steering teens to 80-inch beds.

Choose a queen if:

• You share the bed with a partner, a child who visits at night or a large dog.
• You are tall enough that 75 inches leaves your feet at the edge once the pillow takes its share.
• The bedroom is 10 by 10 feet or larger.
• It is the main bedroom and the mattress needs to last 10 years without being outgrown.

If a spare room also has to work as an office, a sofa bed or foldable couch may suit it better than either mattress. Whichever size you pick, every eligible mattress carries our 60-Night Comfort Guarantee: one exchange, no exchange fee.

Shop Double and Queen Mattresses in Brantford

Shop: Queen Mattresses at Mattress Miracle

Sources

• Better Sleep Council (sponsored by the International Sleep Products Association). Mattress Sizes. bettersleep.org
• Government of Canada. Weights and Measures Act, R.S.C. 1985, c. W-6, Schedule II, Canadian Units of Measurement. laws-lois.justice.gc.ca
• Tidd, J. Sleep Foundation. Comforter Sizes: Dimensions of a King, Queen, Full, and Twin. Updated June 4, 2025. sleepfoundation.org
• Mattress Miracle. Mattress Sizes Canada and Standard Bedding Dimensions Canada, updated September 14, 2026.
• Mattress Miracle catalogue: double and queen variant prices of the 41 mattresses in the double mattress collection, the Natura and Sprout mattresses, and the 69 bed frames sold in both sizes, read October 9, 2026.

Visit Our Brantford Showroom

We are located at 441 1/2 West Street in Brantford, in the city since 1997 and on West Street since 2010. Parking is free, right at the store. Our team does not work on commission, so the advice is based on your room and your sleep needs.

Mattress Miracle, 441 1/2 West Street, Brantford, ON, (519) 770-0001

Hours: Monday-Wednesday 10am-6pm, Thursday-Friday 10am-7pm, Saturday 10am-5pm, Sunday 12pm-4pm.

If you are still weighing a full against a queen, come lie on both with whoever shares your bed and take your time. Bring your room measurements and we will tell you what fits.